Is it true that Nitrox is designed for Ultra Deep diving?

The assertion that Nitrox is designed for ultra-deep diving is inaccurate, and the correct understanding aligns with the response given. Nitrox, which is a blend of nitrogen and oxygen with a higher concentration of oxygen than that found in regular air, is primarily utilized to extend bottom time and reduce nitrogen uptake during dives, rather than specifically enabling deeper dives.

While divers can benefit from reduced nitrogen narcosis and the potential for shorter surface intervals when using Nitrox at moderate depths, the mixture's higher oxygen content imposes a limit on how deep one can safely dive. This is because oxygen becomes toxic at elevated pressures, a condition known as oxygen toxicity, which is more prominent as depth increases.

Therefore, Nitrox does have more restrictive depth limitations compared to air due to these physiological factors. The idea that Nitrox allows divers to dive deeper than air is misleading because it suggests a capacity for greater depth that does not account for the risks associated with increased oxygen levels at greater pressures.